Abstract: Provided are a photosensitive composition for pulse exposure including: a coloring material A; a photoradical polymerization initiator B; and a radically polymerizable compound C, in which a content of a radically polymerizable compound C1 having a weight-average molecular weight of 3000 or higher is 70 mass % or higher with respect to a total mass of the radically polymerizable compound C.

Abstract: A valve includes a valve stem, a first valve body disposed on a distal end side of the valve stem and configured to be driven via the valve stem, a first valve seat on which the first valve body is seatable, an auxiliary seat surface extending along a direction transverse to an axial direction of the valve stem, an auxiliary seat portion disposed on a proximal end side of the valve stem with respect to the first valve body and configured to abut on the auxiliary seat surface when the first valve body is closed, and a biasing member capable of generating a biasing force along the axial direction of the valve stem.

Abstract: A valve includes a valve stem, a first valve body disposed on a distal end side of the valve stem and configured to be driven via the valve stem, a first valve seat on which the first valve body is seatable, an auxiliary seat surface extending along a direction transverse to an axial direction of the valve stem, an auxiliary seat portion disposed on a proximal end side of the valve stem with respect to the first valve body and configured to abut on the auxiliary seat surface when the first valve body is closed, and a biasing member capable of generating a biasing force along the axial direction of the valve stem.

Abstract: Provided is a steam valve (1) equipped with: a stop valve (2) capable of stopping/releasing the flow of steam when driven so as to open/close; an governing valve (3) that is provided coaxially in the interior of the stop valve (2), and that controls the flow volume of the steam when driven to open/close in the same direction as the opening/closing of the stop valve (2); and a first guide part (11) that is provided between the stop valve (2) and the governing valve (3) so as to separate the stop valve and the governing valve in the radial direction, and that guides at least the governing valve in the opening/closing direction.

Abstract: Provided is a steam valve (1) equipped with: a stop valve (2) capable of stopping/releasing the flow of steam when driven so as to open/close; an governing valve (3) that is provided coaxially in the interior of the stop valve (2), and that controls the flow volume of the steam when driven to open/close in the same direction as the opening/closing of the stop valve (2); and a first guide part (11) that is provided between the stop valve (2) and the governing valve (3) so as to separate the stop valve and the governing valve in the radial direction, and that guides at least the governing valve in the opening/closing direction.